Stamping-machine.



E. N. PREBLE.

STAMPING MACHINE.

APPLICATION FILED DEC.8. I913.

1,269,642. Patented June 18, 1918.

W/T/VEESZ UNITED STATES PATENT OFFICE.

EDWIN H. mm, O1 BEVERLY, IABSACH'USETTS, ASSIGNOB, BY MESNE ASSIGN- 11]".18, .l'O UNITED SHOE MACHINERY CORPORATION, OF PATEBSON, NEW

JERSEY, A CORPORATION 01' NEW JERSEY.

STAIPIHG-KACHINE.

To allwhomitma concern:

Be it known at I, EDWIN N. Panama, a citizen. of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Stamping-Machines, of whichthe following descrigiion, in connection with the accompanying awings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

several different symbols may be impressed in a short space of time on the same shoe sole, the die carrier beingmovable to bring the different dies into stam ing position as required. One object of 18 invention is to provide improved heating means for a machine of this t e.

It is desirable t at the heatin means be cf such character that its efi'ect Wlll be localized and only such portions of the machine heated asis required, for otherwise the operation of the moving parts of the machine may behindered by the resulting expansion. It is also desirable that the heatin means be so designed that all the dies in t e die carrier will be maintained at substantially equal temperature so that no time need be lost in changing from one die to another. The heating device herein disclosed comprises one means by which these desirable results may be secured. -To that end an important feature of the invention consists in arran ing the die carrier for movement upon a ho low or recessed spindle in which is disposed electrical heatin resistance.

Another important eature of the invention; consists in the rovision of heated holding means ada te to retain in convenient osition those ies which are not at the time being used in the turret. By the use of such a device these dies may be kept heated somewhat so that when they are inserted in the Specification of Letters Patent.

Application fled {December 8, 1918. Serial llo. 806,807.

plun to brm the desired die into stamping posi- Patented June 18, 1918.

die carrier less time is required in bringing them to the stam ing or branding temperature than would be required in the case of cold dies.

' These and other features of the invention, some relating to the general construction of the machine and others to the arrangement of the electrical connections, will be best understood and appreciated from the following descri tion of a preferred embodiment thereof se ected for purposes of illustration and shown in the accompanying drawings, in which,

Figure 1 is a view in perspective of portions of a stamping machine embodying my invention, and

2 is a sectional view of the die carrying head.

or purposes of illustration the invention is shown as embodied in a stam ing machine similar to that disclosed in nited States Letters Patent No. 1,028,567, granted June 4, 1912, on an application of Gordon and Topham but it s ould be understood that the invention is in no sense limited to stampin machines of this or any particular type.

he machine frame 2 is provided with an overhanging arm in which is formed a vertical guideway for a p1unger'4 which is arranged to reciprocate toward and from a horn 6 siipported by the lower part of the machine rame. The plunger 4 is reciprocated to effect the stamping operation by a lever 8 which may be oscillated by a cam or other suitable mechanism not shown. The plunger 4 is forked at its lower end and carries a transversebolt 10 which acts as a spindle for the die carrier or turret 1-2. The turret 12 has a plurality of radially disposed sockets for the stamping dies 14 and 1s arranged to turn between the forks of the r 4 and upon the spindle 10 in order tion. locking (pin or detent, not shown, may be provi e for holding the turret against rotation with one or another stampin die in proper position.

he spindle 10 is made hollow to receive a pair of coils 16 of electric heating resistance placed end to end. These coils are thus located at equal distances from each die in the turret so that all the dies will be maintained at substantially the same temperature. The heating means,-moreover, is un- F I i I somewhet heeted ti'irongh the affected by the adjusting movement of the turret upon the spindle es the letter is not turned with the turret.

The spindle "10 is threaded at its enter ends end extends through the forhs eif the plunger at being provided et eeeh end w th a nut 18 having e tnhuier progeotion or guide 20 on its outer side @onneoting Wires 22 for the heating coiis 16 press onttverdiy through the ends ofthe spindle end through the tubular Wire guides dd, tithin these guides 20 are disposed at nnmher of loose perforated 2d of insnietmg metreriei through which the Wires extend. @ne genr pose of this eonstrnetion is to insure the insulation of the eonneeting 22 sheii not be subjected weer or the wires themselves broken es the pinnger 4: eerrying the heating coils moves up end down the stationery Jrrenee 4 The connecting Wires 22 pess npwerdiy on each side of" the machine from Wire guides Q0 through tnhnier reteiners 92 secured to the frame 2 end then to notes or? e a switch 28 mounted on sWimh-hoerd 36 secured to the frerne, The sWiteh-hoerd Sail else eerries at double poie 3 2?; by which the electric e'nnrrent they he entirely out ofir from the machine when desired, end e smeii temp so connected es to he iiinrni meted. when onrrent is being consumed The geidewey in the frerne '9; for plunger is eiosed its forwerd side by it cover piete it having; on its outer fete number of projeeting; tosses thee eh ievided with an oblique socket for the re eeption of e sockets piete dd ehford convenient retaining meens for dies not eetueiiy in use and es this piete is eted tnrret 12 end piunger e from the eoiis it, dies ere meinteined et times in e Werrncon tion end Wiii he quickly to the re qulred temperature when inserted in the turret.

It is believed thet the operetion of gnachine wili he an erent from. forege mg description but neey briefly he set teeth as foiiows: The operetor ejin serted in the turret those dies which are re quired for the Work heed throws the switeh and shows the turret and to become sufiicientiy heated for hrendingo The boot 0r shoe to be stamped is then placed on the horn 6 end the mechine set in operetion, fiherenpon the plunger d is moved downwardly end the heated, dieit'oroed against the seie for en interval snfiicient to brand the desired symbol inte the sole. The phmger 4- is then eieveted and the turret mey he turned to bring enother die into stamping positron, the Work eon tinuine; in this manner until the required symbols have been impressed when enother shoe may be presented Having thns described my invention, I claim es new end desire to seenlre "by Letters Petent of the United States:

in e stamping machine andepted to operate with interchengeehie dies, e metaliio piete with a. plurality of projeeting: oossesyeeeh hoss having e die-reeelving soeitet inclined with respect to the surface of the piste end means for heating the Pieter. a

it, A sternping machine having, in some hinetion e,- rotetehie ttntnet e. hollow spindle therefor, electric heating means disposed Wholly Within seid spindle end having flexihie conductors for the heating means ex tending'irorn within the spindle out through the end of eeid spindle end at threededte hide-r extension rigid with the spindle end seid extension serving" as e guide for the flexible conductor and in the retention of the turret upon the sgeindiec 30 A stemping mectdne her ing 630210331 netion e, reeiprocetory plunger forked etone end a, hollow spindle extendingthrongh the forks of the pinnger end rigidly se sored thereto-,e die carrying turret rotetehiy monnted upon the spindle between the forks electric heating disposed the hoteoff the hollow spindie and extending one weirdly tothe olene of the side snri eoes of the plunger whereby both the turret and the fork of the pinnger ere heeted end edie eerrier which the host oii-the is eonnnnnieetedb v Ar nieehine heving in eonehis netion, e stationery e, forked mounted for reeiproeetion t1 time and eerrying e die holder e; trensverse belt for meinteininrz the die holder in the tee eteetrio heeting means disposed Within e I bolt, tnhuier net for securing the it. to the plunger connecting wires passing through meens, frame;

5., [L stamping; meohine having in eornhi= netion e, stationery-trellis, e reeiproeeting pinnger mounted therein carrying end he heated by eieetric heating e.- cerrier piete secured to the theme edjeeent tothe pinnger where it be heated front the heeted plunger and having die holding soehets in its fete, I

6a A stempingzmeehine heaving, conrhi net-ion e stetionery frezne having e guide way, a plunger mounted therein end eerr Q e turret with die seehets e eerrier piste with die soehets end a. heating device eom= mon to both the turret end the carrier piste, seid end plate being so die posed" thet one is Wermed by the other,

2, A stempingmeehine having, in eomhi netion e stationery frame having e, guide we end. it cover piste with e seriesor pro jeeting bosses on its fete hoes seid tuhnier not to the an obliquely disposed die socket therein, a

die carrier mounted to reei rocate in the guideway, and means movab e with the die carrier for heating both it and the cover 5 plate.

8. In a stamping machine adapted to oper-.

ate with interchangeable (lies, a metallic plate with a plurality of bosses formed there- 1 In testimony whereof I have signed my I name to this specification in the presence of two snbscribing witnesses.

EDWIN N. PREBLE.

Witnesses:

Cnns'mn E. Rooms,

LAURA M. Goonnmon. 

